May Weather in Guernsey, United States

Last updated: June 24, 2025

In May, the average temperature in Guernsey, United States is a mild 13°C (55°F). However, be prepared for a range of temperatures, with a minimum of -3°C (27°F) and a maximum of 31°C (89°F). You can expect about 85 mm (3.3 in) of precipitation over 13 days, accompanied by an average humidity level of 74%, making it a month where a mix of sunshine and showers is quite common.

May Temperature in Guernsey

In May in Guernsey, the average temperature is 13°C (55°F). Maximums can reach 31°C (89°F) and minimums can be as low as -3°C (27°F). Be prepared for a wide range of temperatures if you're planning to visit during this time.

May Weather in Guernsey: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Guernsey, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Guernsey, May typically has an average temperature of 13°C (55°F), with highs reaching up to 31°C (89°F) and lows dropping to around -3°C (27°F).

Data source: Temperature data for Guernsey generated using information from the Copernicus Climate Change Service.

May Precipitation in Guernsey

In Guernsey in May, the precipitation amount is 85 mm (3.3 in) spread over 13 days.

May Precipitation Trends in Guernsey

The chart displays monthly precipitation patterns in Guernsey, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Guernsey, May typically receives around 85 mm (3.3 inches) of precipitation spread over approximately 13 days.

Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

May Humidity in Guernsey

In Guernsey in May, humidity is 74%. With an average temperature of 13°C (55°F), this humidity feels like a damp blanket wrapping around you, making outdoor activities somewhat uncomfortable and demanding frequent breaks in shaded areas.

May Average Humidity in Guernsey

This chart illustrates the average monthly humidity levels in Guernsey, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Guernsey is approximately 74%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Guernsey

In Guernsey in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Guernsey.

Maximum UV Index Levels in Guernsey for May

The chart shows the monthly maximum UV Index (UVI) for Guernsey in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In May, the maximum UV index in Guernsey typically reaches 10, which falls under the very high exposure category.

Data source: Guernsey May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How May Weather in Guernsey Compares to Other Months

Weather in Guernsey varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Guernsey, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Guernsey, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (31°F)	12 mm (0.5 inches)	73%	moderate
February Weather	-2°C (29°F)	23 mm (0.9 inches)	78%	moderate
March Weather	4°C (39°F)	50 mm (2.0 inches)	64%	high
April Weather	8°C (46°F)	45 mm (1.8 inches)	66%	very high
May Weather	13°C (55°F)	85 mm (3.3 inches)	74%	very high
June Weather	21°C (70°F)	37 mm (1.5 inches)	84%	extreme
July Weather	25°C (77°F)	27 mm (1.1 inches)	85%	extreme
August Weather	23°C (74°F)	16 mm (0.6 inches)	85%	very high
September Weather	19°C (66°F)	24 mm (0.9 inches)	76%	very high
October Weather	8°C (47°F)	33 mm (1.3 inches)	71%	high
November Weather	4°C (40°F)	17 mm (0.7 inches)	73%	moderate
December Weather	1°C (33°F)	17 mm (0.7 inches)	75%	moderate